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Abstract

We obtained a new cation radical salt of bis(ethylenedithio)tetrathiafulvalene (ET) with a κ-type packing motif, κ-(ET)2Ag(CN)[N(CN)2], by electrooxidation. In the salt, each ET layer is separated by polymeric {Ag(CN)[N(CN)2]-}∞ layers, which are composed of Ag(I) ions trigonally coordinated to form an infinite zigzag chain of -NC-Ag-NC-Agwith pendant dicyanamides. The salt undergoes a superconducting transition with a midpoint critical temperature (Tc) of 6.6K and an onset Tc of 7.2 K, thereby indicating the highest Tc among ET superconductors formed with a polymeric Ag(I) complex anion.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan (84), 2015-12-15

    Physical Society of Japan (JPS)

Codes

  • NII Article ID (NAID)
    120006027082
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    1347-4073
  • Data Source
    IR 
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